Nut lock



M. M. MAGUIRE ET AL NUT LOCK Oct. 4, 1938.

Filed A ril 17, 1936 I/V Vf/V 7056. Was Ml NM ume. M15554; Mme/m Patented a. 4, 1958 I 2,131,812

UNITED STATES PATENT OFFICE NUT LOCK Mable M. Maguire, Yreka, Calif., and Russell Wright, Seattle, Wash, assignors of one-fourth to Manual S. Alves, Yreka,'0alif.

Application April 17, 1936, Serial No. 74,926

1 Claim. (Cl. 151-459) This invention relates to a nut lock whereby a adapted to mesh with the teeth 1 on the washer nut is effectively held against retraction on a and since the teeth are substantially regular thrubolt. out the entire circumference of the washer and An object of our invention is to provide a novel ring, the ring and washer can be inter-locked in nut lock which is simple in construction and inany relative position. 5 expensive to manufacture, and which can be A plurality of fingers l2 depend from the ring quickly and easily placed in looking position on 10, and the lower ends of these fingers extend the nut when said nut is screwed onto the bolt. into a groove 3 in one of the flat faces of the nut A further object is to provide a novel nut lock 2. Also, these fingers lie against the fiat faces which will effectively hold the nut against reof the nut, thereby eifectively gripping the nut 10 traction whether the nut is loosely or tightly and holding it against rotation in the following pressed against a plate or the like thru which the manner:' bolt extends. After the nut, 2 is screwed onto the bolt in the Other objects, advantages and features of indesired position, the washer 4 is dropped over vention may appear from the accompanying the bolt and onto the top of the nut. The tongue 15 drawing, the subjoined, detailed description and 8 is fitted in the groove 9, and. consequently, the the appended claim. washer cannot rotate relative to the bolt. The In the drawing, ring I0 is now inter-locked with the washer 5 by Figure I is a side elevation of our nut lock in means of the inter-engaging teeth I, II. The operative position. fingers l2 are now pressed into the grooves 3 and 20 Figure 2 is a top plan view of the same. lie fiat against the faces of the nut, as shown in Figure 3 is a transverse sectional view of the Figs. 1 and 2. Thus, the nut cannot rotate withnut lock and nut, a fragment of the bolt being out moving the ring and the ring is held against shown in elevation. rotation because of its inter-engagement with the 5 Figure 4 is a top plan view of the locking ring. washer. The fingers l2 also act to hold the ring Figure 5 is a transverse sectional view of the against accidental displacement.

same. In Figs. 8 and 9, a nut lock is shown in which Figure 6 is a plan view of the inter-locking ring the separate washer is eliminated. A ring I3 is and washer. provided with depending fingers M which fit into Figure 7 is a side elevation of the washer. one of the grooves 3. A tongue I5 on the ring fits .30

Figure 8 is a side elevation of a slightly modified into the usual key slot or groove in the bolt, thus form of nut lock. holding the ring against rotation, and the de- Figure 9 is a plan view of the modified form of pending fingers of the ring engage the bolt and lock. hold it against rotation. V Referring more particularly to the drawing,- Having described our invention, we claim: 35 the numeral I indicates a bolt upon which the nut A t k including b t, t threaded on 2 is threaded. The nut is provided with a recess th b lt, id t having recesses i th faces 3 in each of the faces thereof. The purpose of the thereof, a, washer, a tongue on the washer, said recesses will be further described. bolt having a groove to receive the tongue, said 40 0 111115 100k consists of an inner Washer 4 washer having continuous external teeth thereon, 40

Which includes a fla e 5 a d an upwardly eX- a ring, continuous internal teeth on the ring enten annulus 6. The Outer Surface of e gageable with the teeth on the washer, and arms annulus is toothed or corrugated, as shown at 1. depending fr m th rin said rms extending The washer is keyed to t e bolt y ea f a into the recesses whereby the ring is held on the tongue 8 which extends into the groove 9 in the 'n t, 45

bolt. MABLE M. MAGUIRE. A ring In is formed with teeth or corrugations RU ELL RI l l on the inner surface thereof. These teeth are 

